<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>NormalMap</title>
<script src="../../three-part/threejs/three.js"></script>
<script src="../../three-part/utils/stats.min.js"></script>
<script src="../../three-part/utils/dat.gui.min.js"></script>
<script src="../controls/TrackballControls.js"></script>
<script src="../util/util.js"></script>
<style>
body {
margin: 0;
overflow: hidden;
}
</style>
</head>
<body>
<div id="container"></div>
<script type="text/javascript">
init();
function init() {
// show FPS
let stats = initStats();
// resize
window.addEventListener('resize', onResize, false);
let scene = new THREE.Scene();
let camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.x = -30;
camera.position.y = 40;
camera.position.z = 30;
camera.lookAt(scene.position);
let renderer = new THREE.WebGLRenderer();
renderer.setClearColor(new THREE.Color(0x000000));
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
document.getElementById("container").appendChild(renderer.domElement);
// init trackball control
let trackballControls = initTrackballControls(camera, renderer);
let clock = new THREE.Clock();
// add a plane
let planeGeometry = new THREE.PlaneGeometry(100, 100, 1, 1);
let planeMaterial = new THREE.MeshLambertMaterial({
color: 0xffffff
});
let plane = new THREE.Mesh(planeGeometry, planeMaterial);
plane.receiveShadow = true;
plane.rotation.x = -0.5 * Math.PI;
scene.add(plane);
let ambienLight = new THREE.AmbientLight(0xffffff);
scene.add(ambienLight);
let spotLight = new THREE.SpotLight(0xffffff, 0.6);
spotLight.position.set(-40, 60, -10);
spotLight.castShadow = true;
scene.add(spotLight);
let textureLoader = new THREE.TextureLoader();
let cubeGeometry = new THREE.BoxGeometry(10, 10, 10);
let cubeMaterial = new THREE.MeshStandardMaterial({
map: textureLoader.load("../assets/textures/general/plaster.jpg"),
metalness: 0.2,
roughness: 0.2
});
let cube = new THREE.Mesh(cubeGeometry, cubeMaterial);
cube.position.set(0, 5, 0);
scene.add(cube);
// return a new material with the same parameters as this material
let cubeMaterialWithNormal = cubeMaterial.clone();
cubeMaterialWithNormal.normalMap = textureLoader.load("../assets/textures/general/plaster-normal.jpg");
let cubeGeometry2 = new THREE.BoxGeometry(10, 10, 10);
let cube2 = new THREE.Mesh(cubeGeometry2, cubeMaterialWithNormal);
cube2.position.set(0, 5, 15);
scene.add(cube2);
// attributes which can be modified in GUI
const controls = {
};
// init GUI
initGUI();
renderScene();
function initGUI(){
let gui = new dat.GUI();
}
function onResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function renderScene(){
trackballControls.update(clock.getDelta());
stats.update();
requestAnimationFrame(renderScene);
renderer.render(scene, camera);
}
}
</script>
</body>
</html>
运行结果：
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